QUEENS, N.Y. (PIX11) -- When storms dump rain on the city, sewers are put to the test. Some of them can’t handle the flow.

Flooding is a problem around the city. A multi-billion-dollar mega project is underway in Queens.

A half-mile stretch of storm sewer is being "cast in place," where crews build the form and concrete is poured.

It will eventually run from 149th Avenue and 224th Street along Springfield Lane in Idlewild Park. It will drain into a creek and Jamaica Bay southwest of Rockaway Boulevard.

Thomas Foley is the commissioner of the NYC Department of Design and Construction.

"A great engineering feat that's on budget and on schedule. People won't know this is under their feet," Foley said.

Smaller local lines connect to bigger sewers to channel stormwater and runoff. The new

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